Pipe-coupling.



N- 787,791f PATBNTED APR.18,1 905.

' G. H. REYNOLDS.

PIPE GOUPLING.

APPLIUAUON FILED AUG. 29.1904. z SHEETS-sgml' 1.

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No. 787,791'. PATPNTBD APR. 18, 1905.

G. H. RPYNULDS.

PIPE COUPLPNG.

APPLIGATION FILED AUG. 29, 1904..

2 SHEETS-SHEET 2.

UNIT-ED STATES Patented April 18, 1905.

GEORGE H. REYNOLDS, OF MANSFIELD DEPOT, CONNECTICUT.

fPIPE-'QQUPLI'NGL SPECIFICATION forming part of Letters Patent No.787,791, dated April 18, 1905. Application filed August 29, 1904. SerialNo. 222,545.

To all whom, it 71cm/ concern:

Be it known that I, GEORGE H. REYNOLDS, a citizen of the United States,and av resident of Mansfield Depot, in the county of Tolland and Stateof Connecticut; have invented certain new and useful Improvements inPipe-Couplings, of which the following is a specification.

This invention relates to new and useful improvements in pipe-couplingssuch as are re quired to join together sections of high-pressure steamor hydraulic pipe.

For certain classes of pipe it is desirable to have a strong coupling ofthe above class which can be attached when placing the pipe in positionand which may properly be termed a detachable coupling, thus permittingthe employment of smooth sections of pipe free from the usual connectedcoupling members, which are non-detachable.

It is the object of my invention to provide a strong and durable pipecoupling or joint which may be attached over the flanged ends ofwrought-iron or steel pipes in a way to securely unite the same, toconstruct said coupling in a manner that will permit of its quick andconvenient assemblage on and removal from the pipe, so that it will drawthe two ends of the two sections of pipe together, to produce it in away that will strengthen the pipe adjacent to the flange instead ofweakening it', as is usually the case, and, finally, to provide acoupling which will be comparatively inexpensive to manufacture.

Vith the above and other minor objects in view my invention resides andconsists in the novel construction and combination of parts shown uponthe accompanying two sheets of drawings, forming a part of' thisspecification, upon which similar characters of reference denote like orcorresponding parts throughout the several figures, and of which--Figure l shows alongitudinal sectional View through my improved couplingcomplete, including the ends of two pipe-sections. Fig. 2 shows a sideelevation, on a reduced scale, of my improved coupling attached to theconnected ends of two pipe-sections. Fig. 3 is a sectional end View ofthe constructiony shown in Fig. 2. Fig. 4 shows two sections of pipe,one straight and the other bent, such as my coupling is designed to beused upon. Figsi 5 and 6 show vertical cross-sectional views and a sideView, respectively, of the outer or clamping rings of my coupling; andFig. 7 shows vertical cross-sectional views and a side View of thesectional bushing-ring, which f its inside of the outer or clampingring.

Referring in detail to the characters of reference marked upon thedrawings, A and B represent two sections of pipe, 'one of whichrepresents a bentl section and the other a straight pipe. These sectionsmay, however, be alike in shape so far as the application of my improvedcoupling is concerned, or either or both may be bent into other shapesfrom that shown by B in Fig. 4 of the drawings. In manufacturing thesepipes are first forged by means of a press having suitable dies to formthe flanges a and reinforcements c on the ends and may then be bent toany shape desired. These flanges and reinforcements are alike on all thedifferent shapes of pipes and likewise similarv on each end, thuspermitting the ends of any of the various styles or shapes to besimilarly connected. The reinforcements shown adjacent to the fiange care preferably formed on the outside of the pipe, and its surface may betapering in form, as shown, or straight, if preferred. To be effective,however, itshould be slightly heaviest adjacent to the flange, as thatisnaturally where the pipe is most liable to rupture.

The parts of the coupling comprise two sectional rings or bushings C,having an enlarged inner edge d and a reduced outer edge e, forming atransverse shoulder f. These shoulders are engaged by similar orcorrespondingly shaped shoulders /L on the inner side of clamping-ringsI l, forming the outer members of the coupling. The inner diameter ofthese clamping-rings is of a diameter greater than that of the outerdiameter of the flange of the pipes, thus allowing the rings to freelypass over said anges in the attachment and assembling of the parts.Theclamping-rings I are each provided with a flange j', which iscomparatively thin andl disposed outwardly in a manner. to register witheach other. A packing ring or washer K, preferably of soft copper, isplaced intermediate of' the serrated ends IOO of the pipes and theflanges of the outer rings in a manner to be squeezed together` by thetightening of' the bolts of' the elampings-rings and to form anoperative tight joint. The rings I are drawn together by nutted bolts Lpassing therethrough, of which there may be anydesired number placed atan equal distance apart around the coupling. The purpose of theoutWardly-defiected flange on the rings is to provide a contact thatwill give slightly when the bolts are firmly tightened, thus affordingthe tightest grip or connection in the joint proper between said pipes.

In the use of' my coupling the parts are attached after the pipes havebeen received on the job and may be connected during the placement of'the several sections in position. In practice the outer or clampingrings are first slipped over the fianged ends ofthe pipe, after whichthe bushings or sectional rings are placed inside of said outer rings.The two assembled rings are then shoved together against a suitablepacking-washer, when the bolts are put in place and screwed up tight.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. Ina pipe-coupling, the combination with the flanged ends of' pipes,of sectional rings to encircle the pipe and engage the back of saidflanges,rings for holding the sections together and each bearingan.outwardly-disposed flange to register with that of the other, apackingring intermediate of and engaged by the ends of' the pipes, andmeans for drawing the rings and ends of pipes together.

2. A pipecoupling comprising sectional rings to engage the back of apipe-flange and having an enlarged inner edge and reduced outer edgeforming ashoulder, clamping-rings containing a correspondingshould er onits inner face to engage the shoulders of the sectional rings, andinwardly-disposed flanges on their outer edges adapted to register witheach other, a packing-ring intermediate of' both the pipe and ringflanges, and bolts to draw the parts together.

3. In a pipe-coupling the combination with pipes having their endsprovided with fianges and reinforcements adjacent thereto, of sectionalrings encircling the pipe and the backs of' the flanges, ringsencircling the sectional rings and bearing f'orwardlyfdisposed flanges,a packing-ring intermediate of' the flanges of' the rings and the endsof' the pipes and bolts to draw the parts together.

4. In apipe-coupling, the combination with forged pipes having flangedand reinforced ends, of' attachable sectional rings to engage theflanges of' the pipes and bearing-shoulders, complete rings bearingshoulders corresponding with the shoulders of the sectional rings and anannular projection from said complete ring, and means for securing theparts together.

Signed at Bridgeport, in the county of Fairfield and State of'Connecticut, this 25th day August, A. D. 1904.

GEORGE H. REYNOLDS.

Witnesses: v

C. M. NEWMAN, WILLIAM V. DEVITT.

